A city of southwest Pennsylvania southwest of Pittsburgh. Settled in 1769,it is a manufacturing center and the seat of Washington and Jefferson College(first chartered1787). Population,15,864.是什么意思_A city of southwest Pennsylvania southwest of Pittsburgh. Settled in 1769,it is a manufacturing center and the seat of Washington and Jefferson College(first chartered1787). Population,15,864.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句